How severe is CVE-2025-4684?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Blockspare — News, Magazine And Blog Addons For (Gutenberg) Block Editor

CVE-2025-4684

The BlockSpare: Gutenberg Blocks & Patterns for Blogs, Magazines, Business Sites – Post Grids, Sliders, Carousels, Counters, Page Builder & Starter Site Imports, No Coding Needed plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the HTML attributes of Image Carousel and Image Slider widgets in all versions up to, and including, 3.2.13.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (16.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Blockspare — News, Magazine And Blog Addons For (Gutenberg) Block Editor — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2025-4684?: CVE-2025-4684 is a medium-severity vulnerability in Blockspare — News, Magazine And Blog Addons For (Gutenberg) Block Editor, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-08-01.
How severe is CVE-2025-4684?: Medium severity. CVSS v3 base score is 6.4 out of 10.